US2830573A - Method and device for sawing of stone blocks - Google Patents

Method and device for sawing of stone blocks Download PDF

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Publication number
US2830573A
US2830573A US548209A US54820955A US2830573A US 2830573 A US2830573 A US 2830573A US 548209 A US548209 A US 548209A US 54820955 A US54820955 A US 54820955A US 2830573 A US2830573 A US 2830573A
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United States
Prior art keywords
frame
fluid
pressure
sawing
blades
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Expired - Lifetime
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US548209A
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English (en)
Inventor
Wallin Sven
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Individual
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Individual
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
    • B28D1/06—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with reciprocating saw-blades

Definitions

  • nesses depends on the variation inthe weight withwhich the saw bladesor flat irons are loaded duringsawing.
  • This weight consists, as is well known, usually of theframe" in which the saw blades are mounted.
  • This frame is usually dimensioned for the use of as many saw blades as possible and in order to bring about. enough pressure on the saw blades. The sawing takes place in. such. a manner, that the frame, swings forwardand backward so that.
  • the blades in the frame slide on the stone and every blade grinds a slit inthe stone
  • the grinding . is effected by theuse of agrindingmaterial, consisting of sand or steel sand, which together withthe blades grinds the slit in the stone.
  • agrindingmaterial consisting of sand or steel sand, which together withthe blades grinds the slit in the stone.
  • the saw is so constructed thatthe frame and the-blades-periodically are raised and, lowered.
  • the frame is mounted in four rods, the upperparts of which are'mounted in screws, ruledfby. guides, whichscrews screw down the blades as these 'are, sawing. down in. the stone.
  • the object of this invention is to utilize the advantages connectedwith the use of wires, i. e. the longer grinding or trail length.
  • the advantages obtained when the grinding and feeding are effected by fixed rods are also utilized. It is desirable to level the weight of the frame and thereby level the pressure during sawing. It is also desirable to 'ice obtain. maximum grinding length and still obtain enough grinding material under the saw blades.
  • An advantage of this invention is also the fact that consideration can be taken to thelocalization of the blades in the frame.
  • Fig. 1 shows a principal construction of the machine
  • Fig. 2 shows the manner of operation of the machine
  • Fig. 3 shows principally how the machine works
  • Fig. 4 shows a detail of the machine.
  • the compressed air-boxes are constructed as valves, which in this example are actuated by compressed air, they can however be actuated by oil pressure as Well, they work in both cases hydraulically.
  • the pressure boxes s are suitably fixed to the frame and contain a membrane 19,,
  • the membrane is fixed to one of the ends of a guide 12 and the other end of the guide is pivotally fixed to the rod L.
  • the pressure boxes are provided with con nections, which in a usual manner are connected to the" pressure source.
  • the rods 4 are as already mentioned pivotally fixed to the guide ruled screws 5, Fig. l.
  • the lower ends of the rods are by means of a link N pivotally fixed to the rod L, and the other end of the rod is by means of a link M pivotally connected to the frame 3.
  • the rods L are arranged under the corners of the frame, the rods will contact the underside of the frame during the swinging motion G--H.
  • the frame may be too light for a certain work, in such case the pressure against the stone from the frame can be increased by feeding compressed air on the underside of the membrane 16.
  • the compressed air is fed so that the pressure actuates the membrane in upward direction.
  • a device for cutting stone blocks comprising, in combination, a first frame supporting a plurality of parallel longitudinally-extending saw blades adapted to engage the block to be out, means defining a supporting frame and means connecting said first frame to said supporting frame to permit longitudinal reciprocation of said first frame to draw said blades back and forth across the block, said last-named means including four first arms pivotally mounted in relation to said supporting frame, four second arms pivotally connected to said first frame and to said first arms, and fluid-pressure responsive means acting upon said second arms in response to variations in fluid pressure applied thereto.
  • a device for cutting stone blocks comprising, in combination, a first frame supporting a plurality of parallel longitudinally-extending saw blades adapted to engage the block to be cut, means defining a supporting frame and means connecting said first frame to said supporting frame to permit longitudinal reciprocation of said first frame to draw said blades back and forth across the block, said last-named means including four first arms pivotally mounted in relation to said supporting frame, four second arms pivotally connected to said first frame and to said first arms, and fluid-pressure responsive means acting upon said second arms in response to variations in fluid pressure applied thereto, said fluid-pressure responsive means comprising a plurality of fluid-pressure chambers rigidly connected to said first frame, a piston pivitally-connected to a second arm and slidable in each of said fluid-pressure chambers, said pistons being connected to a surface adapted to be acted upon by fluid pressure to urge said piston downwardly.
  • a device for cutting stone blocks comprising, in combination, a first frame supporting a plurality of parallel longitudinally-extending saw blades adapted to engage the block to be cut, means defining a supporting frame and means connecting said first frame to said supporting frame to permit longitudinal reciprocation of said first frame to draw said blades back and forth across the block, said last-named means including four first arms pivotally mounted in relation to said supporting frame, four second arms pivotally connected to said first frame and to said first arms, and fluid-pressure responsive means acting upon said second arms in response to variations in fluid pressure applied thereto, said fluid-pressure responsive means comprising a plurality of fluid-pressure chambers rigidly connected to said first frame, a piston pivotally-connected to a second arm and slidable in each of said fluid-pressure chambers, said pistons being connected to a surface adapted to be acted upon by fluid pressure to urge said piston downwardly, said surface being defined by a flexible diaphragm connected to said piston and each of said chambers being provided with a fluid inlet above said diaphragm an
  • a device for cutting stone blocks comprising, in combination, a first rectangular frame supporting a plurality of parallel longitudinally-extending saw blades positioned to engage the block to be cut, said first frame having extensions at each of its corners, a plurality of uprights defining a supporting frame and means for connecting said first frame to said supporting frame to permit longitudinal reciprocation of said first frame to draw said blades back and forth across the block, said last-named means including four first arms pivotally mounted in relation to said uprights, four second arms pivotally connected to said extensions of said first frame and to said first arms, and fluid-pressure responsive means acting upon said second arms in response to variations in fluid pressure applied thereto, said fluid-pressure responsive means comprising four fluid-pressure chambers each rigidly connected to a first frame extension above a second arm, a piston pivotally connected to a second arm approximately at its center and slidable in the associated fluid-pressure chamber, a flexible diaphragm in each chamber connected to the end of the piston therein, and each chamber having a fluid inlet for admission of fluid above said dia
  • a method of cutting a stone block which comprises applying at least one saw edge to a surface of said block, transversely reciprocating said saw edge along predetermined lines with said saw edge in contact with said block and simultaneously maintaining a variable predetermined pressure upon said saw edge by applying varying regulated predetermined fluid-actuated forces at four laterally and longitudinally spaced-apart points removed from said saw edge but acting simultaneously thereupon, said forces acting downwardly in the direction of said surface.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
US548209A 1954-12-14 1955-11-21 Method and device for sawing of stone blocks Expired - Lifetime US2830573A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE2830573X 1954-12-14

Publications (1)

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US2830573A true US2830573A (en) 1958-04-15

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Family Applications (1)

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US548209A Expired - Lifetime US2830573A (en) 1954-12-14 1955-11-21 Method and device for sawing of stone blocks

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US (1) US2830573A (fr)
BE (1) BE543070A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4187827A (en) * 1977-05-20 1980-02-12 Wacker-Chemitronic fur Elektronic Grundstoffe mbH Process for multiple lap cutting of solid materials

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US749707A (en) * 1904-01-12 Stone-sawing machine
US759422A (en) * 1902-09-19 1904-05-10 George H Davis Machine for sawing stone.

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US749707A (en) * 1904-01-12 Stone-sawing machine
US759422A (en) * 1902-09-19 1904-05-10 George H Davis Machine for sawing stone.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4187827A (en) * 1977-05-20 1980-02-12 Wacker-Chemitronic fur Elektronic Grundstoffe mbH Process for multiple lap cutting of solid materials

Also Published As

Publication number Publication date
BE543070A (fr) 1955-12-15

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